Installed HP BIOS Update now laptop is dead no activity

I have a HP Probook 4540s i recently update its BIOS from HP's site after the installation the notebook re started but since after that there is no display i waited for an hour until the battery ran off after when i plugged in its same:
Capslock led is contunously blinking
Fan is running faster than the usual speed i can tell this from the sound
And no display i waited for more than hour for any response but no gain. Searched Internet and find out that alot people fails to update their BIOS in HP laptop i dont know why official HP sites has such updates even avaialble.
Is there a way i can reset the BIOS, Hard reset, through USB of something i have another PC over which i can download anything if its required?
Can anyone please help.
UPDATE
I also tried to recover BIOS through UEFI USB method, but nothing happens after pressing "Win" + "B" and powering on USB led flashes for few seconds and than everything is same.
Did as mentioned here:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=uk&lc=en&docname=c02693833

Hi. I reported this to HP internally yesterday. You are not flying under the radar, so please be patient.
Have you tried a hard reset?
1) Remove the battery and unplug the DC power adapter.
2) Press and hold the power button for more than fifteen seconds.
3) Plug in the DC power adapter (leave the battery out for now)
4) Press the power button
Please post your positive or negative results here in your thread.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

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Installed HP BIOS Update now laptop is dead no activity

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